EP3554189A1 - An electronic heating device and heating method thereof - Google Patents

An electronic heating device and heating method thereof Download PDF

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Publication number
EP3554189A1
EP3554189A1 EP18178112.1A EP18178112A EP3554189A1 EP 3554189 A1 EP3554189 A1 EP 3554189A1 EP 18178112 A EP18178112 A EP 18178112A EP 3554189 A1 EP3554189 A1 EP 3554189A1
Authority
EP
European Patent Office
Prior art keywords
heating
module
control unit
electronic
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18178112.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Haofeng YAO
Chengfu LIANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Hangsen Star Technology Co Ltd
Original Assignee
Shenzhen Hangsen Star Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Hangsen Star Technology Co Ltd filed Critical Shenzhen Hangsen Star Technology Co Ltd
Publication of EP3554189A1 publication Critical patent/EP3554189A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/019—Heaters using heating elements having a negative temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/035—Electrical circuits used in resistive heating apparatus

Definitions

  • the invention relates to the electronic cigarette field, especially for an electronic heating device and heating method.
  • an IQOS mode electronic cigarette smoking device the electronic cigarette smoking device requires the purchase of special cigarette, the cigarette is only about a quarter of the length of domestic common cigarette, the special cigarette is placed into the IQOS smoking device, start heating, the cigarette heated to more than 300 degrees, so that the special cigarette smoke release for smokers to smoke.
  • the electronic cigarette device will heat the cigarette without burning, and does not generate harmful substances such as tar and carbon monoxide, and reduces physical harm to the smoker.
  • IQOS e-cigarette device can only be heated and baked on special cigarette, and the IQOS device heating chip is inserted into the center of the special cigarette, which is heated and baked from the center, and the special cigarette is strip-shaped, and is inserted in parallel with the heating plate.
  • the heating plate applies voltage, the heating plate generates heat, and the entire root when cigarette is baked, the temperature in the area surrounding the heating sheet is relatively high, and the temperature in the area away from the heating sheet is relatively low, and a higher temperature is required to bake the cigarette in the periphery of the heating sheet.
  • the IQOS smoking sheet heats the cigarette
  • the center temperature is high and the peripheral temperature is low, and the cigarette parallel to the heating sheet gradually decreases from the center outward temperature, and the cigarette at the periphery of the heating sheet 90° cannot be baked sufficiently.
  • the invention relates to an electronic heating device and a heating method.
  • the device comprises a control unit U1, multiple heating modules and multiple measuring modules, a control unit U1 for outputting a control signal for driving a heating module to work or shut down, and a heating module for the tobacco is heated; the measuring module is used for collecting the voltage and current information of the heating module, converting the voltage and current into resistance information and transmitting it to the control unit U1 for the control unit U1 to adjust the control signal to drive the heating module to work.
  • the voltage and current are kept within the allowable range of the control unit U1.
  • the heating module and the measuring module are set up, and the control unit controls the heating temperature of the heating module as the target temperature according to the data transmitted by the measuring module, thereby realizing the direct baking and heating of the ordinary tobacco to uniformly release the smoke.
  • Several heating modules surround the heating module. The tobacco is arranged at intervals so that the baking is more complete, the tobacco cigarette gas is released more evenly, and the energy consumption is saved.
  • the purpose of the present invention is to overcome the drawbacks of the prior art and provide an electronic heating device and heating method.
  • An electronic heating device comprises a control unit U1, a heating module and a measuring module, wherein:
  • the heating module comprises four heating unit, and the four heating units surround the periphery of tobacco product in use.
  • the measuring module comprises four measuring unit.
  • each heating unit comprises a switching element and a heating conductor RT, and wherein heating or closing of the heating conductor RT depends on whether the control unit U1 drives the switching element to turn on or off.
  • the switch element comprises a MOS transistor Q1.
  • the heating unit further comprises a first bias resistor R1 and a second bias resistor R2.
  • the heating unit also comprises a sampling resistor R3.
  • each measuring units comprises a current amplifier.
  • control unit U1 is STM32F030CBT6.
  • the invention also provides a heating method using the above electronic heating device, comprises:
  • An electronic heating device of the present invention is provided with a number of heating modules arranged around the tobacco compartment and several measuring modules for detecting current and voltage of the heating module.
  • the control unit controls the heating temperature of the heating module as the target temperature, and achieves direct baking heating of the ordinary tobacco. After the baking tobacco, the smoke is evenly released to the smoker, and several heating modules surround the heating module. The tobacco is arranged at intervals so that the baking is more complete, the tobacco cigarette gas is released more evenly, and the energy consumption is saved.
  • An electronic heating device can directly bake heating to ordinary cigarette or tobacco, evenly release cigarette smoke after tobacco baking, smoke to the smoker, fully bake, release tobacco cigarette gas more evenly, and save energy.
  • the tobacco product is the cigarette product, that is, the cigarette.
  • an electronic heating device comprises a control unit U1, a heating module 1 and a measuring unit 2, wherein:
  • the electronic heating device use the heating module 1 to heat and bake of the tobacco product and do not burn the tobacco, and releases the cigarette gas that is smoked by the smoker.
  • the device reduces the damage to the human body caused by tar and harmful substances released by burning cigarette.
  • the heating module 1 comprises four heating units (11, 12, 13, and 14), and the four heating units surround the periphery of tobacco.
  • the heating module 1 comprises multiple heating units, for example, two, three, or five, and so on.
  • the measuring module 2 also comprises four measuring units (21, 22, 23, and 24), and each measuring units 2 collects the current and voltage of one heating units (11, 12, 13, and 14), so as to the control unit U1 can control each heating units individually, and ensures that the heating temperature of each heating units can reach the target temperature, and the same time, each heating units heat a certain area of tobacco, and the tobacco gas sustain release. If the whole branch of tobacco is baked at the same time, the tobacco gas will be released quickly.
  • the number of the above-mentioned measuring units 2 may also be one, two, three, five, six, etc.
  • the measuring module 2 comprises multiple measuring units, for example, two, three, or five, and so on.
  • each heating units comprises a switch element and a heating conductor RT. Heating or closing of the heating conductor RT depends on whether the control unit U1 drives the switch element to turn on or off.
  • the control unit U1 drive the heating module 1through controlling the switch element to turn on or off.
  • control unit U1 When the control unit U1 controls opening or closing of each heating units, the control unit U1 also collect the voltage and current signal of each heating units through each measuring units corresponding to each heating units, and then the measuring units convert the voltage and current signal to a resistance signal.
  • Each heating units of the heating module 1 contains a positive temperature coefficient of the heating conductor RT.
  • the control unit U1 outputs an opening signal to a heating unit, a voltage is applied to the heating conductor RT. After the current flows through the heating conductor RT, it is converted into heat.
  • This heat that is provided to the baking tobacco through the heating conductor RT of each heating unit of the heating module 1 are uniformly wrapped around the tobacco and can uniformly bake the tobacco.
  • the control unit U1 controls each heating units separately so that the heat can be concentrated in a certain area of the tobacco for baking, and the tobacco gas can be continuously released. For example, if the whole batch of tobacco is baked at the same time, the smoke will be released quickly.
  • the above-mentioned switching element comprises an MOS transistor Q1, Specifically, the MOS transistor Q1 is a P-MOS transistor Q1, it can also be a PNP transistor or an NPN transistor.
  • Each heating units further comprises a first bias resistor R1, a second bias resistor R2 and a sampling resistor R3.
  • One end of the first bias resistor R1 and the second bias resistor R2 are respectively connected to the control pin (i.e., G-pole) and the input pin (i.e., S-pole) of the MOS transistor Q1of the switching element, and the other ends of the first bias resistor R1 and the second bias resistor R2 are connected to a connection point, which is connected to a control port 243 of the control unit U1.
  • the output pin(i.e., D-pole) of the MOS transistor Q1 is connected to an end a sampling resistor R3 ,and the other end the sampling resistor R3is grounded through the heating conductor RT.
  • the MOS transistor Q1 when the voltage Vgs between the gate and the source of the MOS transistor is less than a certain value, that is 0.8v to 2.0v, the MOS transistor Q1 will be conduction, otherwise it will be cut off; as shown in Fig.2 , the two bias resistors (R1, R2) and the control port 243 of the control unit U1 will provide an output level, which is used to provide the voltage Vgs between the gate and the source for MOS transistor Q1.
  • the voltage Vgs between the gate and the source of the MOS transistor Q1 is 0V when the control unit U1 outputs the high level at the control port 243, the P-MOS transistor Q1 does not meet the conduction conditions, and the MOS transistor Q1 remains cut off.
  • the voltage Vgs between the gate and source of the MOS transistor Q1 is a negative value.
  • the high level or low level that is outputted through the control port 243 of the control unit U1 can make the voltage Vgs between the gate and the source of the MOS transistor Q1 to be less than a voltage range value from 0.8v to 2.0v, so that the P-MOS transistor Q1 enters a conducting state.
  • the MOS transistor Q1 acts as an electronic switch.
  • the first bias resistor R1 and the second bias resistor R2 provide an appropriate configuration voltage for the MOS transistor Q1.
  • the high level is provided through the control unit U1 at the control port 243 to make the MOS transistor Q1 to be turned off, when the control unit U1 passes a low level through the control port 243, the MOS transistor Q1 turns on.
  • each measuring units comprises a current amplifier.
  • the sampling resistor R3 is a current sampling resistor.
  • the current flowing through the heating conductor RT is equal to the current flowing through the sampling resistor R3.
  • the current flows through the sampling resistor R3 and generates a voltage across the sampling resistor R3. Since the resistance of the sampling resistor R3 is relatively small, therefore, the voltage across the sampling resistor R3 is also relatively small.
  • the current sampling resistor requires a small resistance R3 and an accuracy of 1%.
  • each measuring unit after the voltage on the heating conductor RT passes through the isolation resistor R4, it is sampled by the control unit U1 at the second sampling port 242,and another voltage VT is sample at the second sampling port 242.
  • the heating conductor RT has a positive temperature coefficient characteristic, and the resistance value increases as the temperature increases.
  • the resistance value of the heating conductor RT reflects the different temperature values.
  • control unit U1 is STM32F030CBT6, whose the control port 243 can output the PWM control signal, and the first sampling port 241 and the second sampling port 242 have a function that is the analog signal conversion function.
  • control unit U1 outputs four ways PWM control signal to respectively control four heating units (11, 12, 13, and 14).
  • the control unit U1 provides eight ways analog to digital conversion signals for four measuring units (21, 22, 23, and 24),and two ways analog to digital conversion signals are provided to r each measuring unit.
  • the four-ways PWM provided by the above control unit U1 are as follows:
  • the stage 1 The stage 1
  • the heating unit 11 works in t0 to t7 time period. in t0 to t1 time period, the heating unit 11 maintains the conduction state of the MOS transistor Q1from t0 time point, and the heating unit 11 start to control the heating of the heating conductor RT, , so that the temperature of the heating conductor RT reaches T3 quickly.
  • the heating unit 12 works in t2 to t3 time period.
  • the MOS transistor Q1 of the heating unit 12 turns on, so that the temperature of the heating conductor RT rapidly rises to T1.
  • the duty cycle of the PWM is adjusted to maintain the temperature of the heating unit 12 as T1.
  • the duty cycle of PWM is adjusted to maintain the temperature of the heating unit 12 as T2.
  • the MOS transistor Q1 of the heating unit 12 turns on, so that the temperature of the heating conductor RT rapidly rises to T3.
  • the duty cycle of PWM is adjusted to maintain the temperature of the heating unit 12 as T3, and the MOS transistor Q1 of the heating unit 12 after t13 maintains closed.
  • the heating unit 13 works in t8 to t19 time period.
  • the duty cycle of PWM is adjusted to maintain the temperature of the heating unit 13 as T1.
  • the MOS transistor Q1 of the heating unit 13 turns on, so that the temperature of the heating conductor RT rises quickly to T2.
  • the PWM duty cycle is adjusted to maintain the temperature of the heating unit 13 as T2.
  • the MOS transistor Q1 of the heating unit 13 turns on, so that the temperature of the heating conductor RT rapidly rises to T3.
  • the duty cycle of PWM is adjusted control to maintain the temperature of the heating unit 13 as T3.
  • the MOS transistor Q1 of the heating unit 3 remains closed.
  • the heating unit 14 works in t14 to t20 time period.
  • the duty cycle of the PWM is adjusted to maintain the temperature of the heating unit 14 as T1.
  • the MOS transistor Q1 of the heating unit 14 turns on, so that the temperature of the heating conductor RT rapidly rises to T2.
  • the duty cycle of PWM is adjusted to maintain the temperature of the heating unit 14 as T2.
  • the MOS transistor Q1 of the heating unit 14 turns on, so that the temperature of the heating conductor RT rises quickly to T3.
  • the duty cycle of the PWM control is adjusted to maintain the temperature of the heating unit 14 as T3.
  • the MOS transistor Q1 of the heating unit 4 remains closed.
  • this time period is a natural cooling time. After all MOS transistors Q1 of the four heating module 1 are turned off, and the internal residual temperature of the heating conductor RT is still relatively high, and it is necessary to wait for a period of time that the temperature returns to normal temperature before allowing the next operation.
  • the heating conductor RT has a temperature sensing characteristic, and the electric heating device does not need to additionally add a temperature sensor, so that to reduce the space for mounting the temperature sensor, and does not need to consider the temperature inconsistency problem caused by the location where the temperature sensor is installed.
  • the heating method of the electronic heating device can effectively surround bake the tobacco, that is cigarette, and the heating temperature is accurately controlled. After the tobacco is to be baked, the tobacco gas is evenly released to the smoker for smoking.
  • the four heating units are cooperated in divided time and the power is increased in divided time, so that the baking more uniform and save energy, and the tobacco will release more tobacco gas.
  • the tobacco is baked in an annular package, baked from the outside to the inside, and the tobacco is heated from the bottom up.
  • the heating unit 11 performs high-power baking of the front tobacco to release the gas of the front tobacco and the heating unit 12 uses lower power.
  • the adjacent portion of tobacco is preheated.
  • the heating unit 12 is enabled to bake the adjacent portion of the tobacco with high power to ensure and sustained release of tobacco gas.
  • the four heating units cooperatively iteratively heat the entire tobacco without causing the tobacco to be completely baked.
  • the control unit U1 can use the data transmitted by the measuring unit to The heating temperature of the heating unit is controlled as the target temperature to achieve direct baking heating of the ordinary tobacco. After the tobacco is to be baked, the smoke is uniformly released to the smoker. Several heating units are arranged around the tobacco compartment to make the baking more fully. The release of cigarette smoke is more even and saves energy.
  • the invention also provides a heating method using the above electronic heating device, including the following steps:
  • the temperature of the surface of the heating conductor RT can be estimated by detecting the resistance value of the heating conductor RT.
  • the target temperature is maintained for baking tobacco.
  • the resistance value of the heating conductor RT is read in the interval cycle time, and the PID operation is performed between the RT resistance of the heating conductor and the target resistance value, and a control amount for controlling the duty cycle of a PWM can be obtained.
  • the target temperature can be maintained. After the target temperature is baked for a certain time, the tobacco is fully baked and no smoke is released. At this time, the control unit turns off the heating unit.
  • the number of the measuring unit of the measuring module 2 is one that is the number both the measuring unit and the measuring module is also one.
  • the measuring unit is equivalent to the measuring module 2.
  • Four heating units (11, 12, 13, and 14) are connected with one measuring unit.
  • the average temperature of four heating units (11, 12, 13, and 14) is measured by one measuring module 2, and the average temperature value comes from the average temperature of the heating element RT measured by the four heating units (11, 12, 13, 14).
  • the heating process of the heating conductor RT, the control process of the control unit U1, the design structure of the heating unit and the design structure of the measuring unit are the same with embodiment 1. These will not repeat here.

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  • Control Of Resistance Heating (AREA)
EP18178112.1A 2018-04-13 2018-06-15 An electronic heating device and heating method thereof Withdrawn EP3554189A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810330515 2018-04-13

Publications (1)

Publication Number Publication Date
EP3554189A1 true EP3554189A1 (en) 2019-10-16

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ID=62705433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18178112.1A Withdrawn EP3554189A1 (en) 2018-04-13 2018-06-15 An electronic heating device and heating method thereof

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EP (1) EP3554189A1 (zh)
CN (1) CN108770084B (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110710726A (zh) 2019-05-16 2020-01-21 厦门蜂涛陶瓷有限公司 陶瓷发热体及具有其的非接触式电子烟加热器
CN110430625A (zh) * 2019-06-10 2019-11-08 深圳桐源科技有限公司 气溶胶产生系统、加热模组、温度检测方法及装置
CN110313643A (zh) * 2019-07-03 2019-10-11 深圳瀚星翔科技有限公司 电子烟及电子烟加热的控制方法
CN114945292A (zh) * 2020-10-15 2022-08-26 卓智微电子有限公司 电子烟及其控制装置
CN112716038A (zh) * 2021-01-18 2021-04-30 河南中烟工业有限责任公司 提升逐口烟雾释放均匀性的烟具控制方法
CN112841755B (zh) * 2021-03-09 2022-07-19 云南中烟工业有限责任公司 发热元件加热程序调控方法及提高烟气释放均匀性的方法
CN113249930B (zh) * 2021-04-21 2023-04-11 海信冰箱有限公司 加热控制电路、加热控制方法、洗衣机及烘干机

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US20030154991A1 (en) * 2002-02-15 2003-08-21 Fournier Jay A. Electrical smoking system and method
US20150035540A1 (en) * 2013-08-01 2015-02-05 Zhiyong Xiang Battery power detecting device and method
DE202014101126U1 (de) * 2014-03-12 2014-04-01 EWWK UG (haftungsbeschränkt) Elektronische Zigarette oder Pfeife
US20150359263A1 (en) * 2014-06-14 2015-12-17 Evolv, Llc Electronic vaporizer having temperature sensing and limit
US20170164658A1 (en) * 2014-10-24 2017-06-15 Guangrong Lin Electronic cigarette capable of temperature control and temperature control method therefor
CN107467718A (zh) * 2017-08-15 2017-12-15 惠州市新泓威科技有限公司 电子烟具的发热装置及其控制方法

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